"What scares me is that there are moral fashions too. They're just as arbitrary, and just as invisible to most people. But they're much more dangerous. Fashion is mistaken for good design; moral fashion is mistaken for good. Dressing oddly gets you laughed at. Violating moral fashions can get you fired, ostracized, imprisoned, or even killed."
Society has shifted on this issue, such that the traditional is considered unacceptable to hold; you're ostracized with negative labels should you hold the unfashionable position. This is precisely what TeamRarebit is doing to Brendan Eich: ostracizing him for his moral stance, one that has fallen out of fashion.